metamask-extension/test/e2e/snaps/test-snap-error.spec.js

const { strict: assert } = require('assert');
const { withFixtures } = require('../helpers');
const { PAGES } = require('../webdriver/driver');

describe('Test Snap Error', function () {
  it('can pop up a snap error and see the error', async function () {
    const ganacheOptions = {
      accounts: [
        {
          secretKey:
            '0x7C9529A67102755B7E6102D6D950AC5D5863C98713805CEC576B945B15B71EAC',
          balance: 25000000000000000000,
        },
      ],
    };
    await withFixtures(
      {
        fixtures: 'imported-account',
        ganacheOptions,
        title: this.test.title,
        driverOptions: { type: 'flask' },
      },
      async ({ driver }) => {
        await driver.navigate();

        // enter pw into extension
        await driver.fill('#password', 'correct horse battery staple');
        await driver.press('#password', driver.Key.ENTER);

        // navigate to test snaps page and connect
        await driver.driver.get('https://metamask.github.io/test-snaps/');
        await driver.fill('.snapId2', 'npm:@metamask/test-snap-error');
        await driver.clickElement({
          text: 'Connect Error Snap',
          tag: 'button',
        });

        // switch to metamask extension and click connect
        await driver.waitUntilXWindowHandles(2, 5000, 10000);
        let windowHandles = await driver.getAllWindowHandles();
        await driver.switchToWindowWithTitle(
          'MetaMask Notification',
          windowHandles,
        );
        await driver.clickElement(
          {
            text: 'Connect',
            tag: 'button',
          },
          10000,
        );

        await driver.delay(2000);

        // approve install of snap
        windowHandles = await driver.getAllWindowHandles();
        await driver.switchToWindowWithTitle(
          'MetaMask Notification',
          windowHandles,
        );
        await driver.clickElement({
          text: 'Approve & Install',
          tag: 'button',
        });

        // click send inputs on test snap page
        await driver.waitUntilXWindowHandles(1, 5000, 10000);
        windowHandles = await driver.getAllWindowHandles();
        await driver.switchToWindowWithTitle('Test Snaps', windowHandles);
        await driver.clickElement({
          text: 'Send Test to Error Snap',
          tag: 'button',
        });

        await driver.navigate(PAGES.HOME);

        const error = await driver.findElement(
          '.home-notification__content-container',
        );
        const text = await error.getText();
        assert.equal(
          text.includes(
            "Snap Error: 'random error inside'. Error Code: '-32603'",
          ),
          true,
        );
      },
    );
  });
});